常見例句雙語例句It is obtained by distilling soft pitch in flash column under certain pressure and temperature .中溫瀝青經過在一定的壓力和溫度下進行閃蒸獲得。www.koppers-china.comIt is obtained by distilling soft pitch in modified pitch column under certain pressure and temperature after certain time heating.中溫瀝青經過在一定的壓力和溫度下，經過一定時間熱處理獲得。 返回 distilling column